Doe gabriel



UNITE@ STATES ATRNT UFFICE.

EMIL cUs'rAv 'rIInoDoR GABRIEL AND JoIIANN cARL roHL, or s'rEcLI'rZ,

GERMANY.

NIITER-BOX.

SPECIFICATION forming part of Letters Patent No. 432,524, dated July 22, 1890.

Application filed August 20, 1889. Serial No. 321,430. (No model.) Patented in Belgium March 20, 1889, No. 85,475, and in France March 2l, 1889, No. 196,877.

tained Letters Patent in France, March 21,-

1889, No. 196,877, and in Belgium, March 20, 1899, No. 85,4755) and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide apparatusby the use of which the workman, without changing his position with regard to the miter-box, may cut and plane both the parts which are to be joined with a miterjoint, or may cut and plane a piece which is to be mitered or beveled from both edges without turning the latter.

The invention consists principally in a miter-box with adjustable rests, and in which the onehalf is exactly sym metricalin con struction with the other half, and, secondarily, in the combination therewith of a tool (saw or plane) the cutting-faces of which are also symmetrically arranged on each side of its center to agree with said molding-box.

Figures 1, 2, and 3 represent the miter-box with vinserted saw, being respectively elevation, plan, and section; 4, 5, and G, respectively, elevation, plan, and section of the plane, which is inserted into the box after the saw with its Sledge has been removed from the same. Fig. 7 illustrates the plane. Fig. S shows on an enlarged scale the device tor adjustment of the angles.

The box consists of the foot-board a, which is provided with a grooved guide l), for receiving the sledges c and d for the saw and plane. Vertically to the foot-board are arranged the two pins g, to act as axes of revolution for the two Initer-rulers. As the edge cc a: of the guiding-groove l) has to remain entirely free, so that the saw and the plane may move along the same withouthinderance, the axis of the pins g cannot coincide with the edge a", but has to be removed from the edge by the distance z, 5o

latter can be moved. In this manner one can 6c adjust the miter-lines so that the edge of the plate always extends exactly as fai-as the saw or plane running along the same. The lines dividing the degrees of the protractor are ruled as tangents to a circle the center of which is in the axis of the pin g and the radius of' which is the sum of the radius of the pin g and the thicknesses of the plates h and h2, so that in fact the said dividing-lines coincide with positions assumed by the outer face of 7o the plate h2. The saw e cu ts forward toward one end and backward toward the other and is fastened to the handle c', situated in the center. The handle has guiding-furrows for the angle-irons on., which latter are secured to the Sledge c, and guide vertically the saw during its up and down motion. The horizontal guidance of the saw is performed by the sledge c and by the guiding-support l).

By this arrangement the saw is always guided 8o along-the edge of the ruler h, which enables an exact cut to be made. The planef is inserted with its sledge cl into the guiding-notch b of the boxaafter the saw has been removed,

so that its side surface, provided with a metal plate, slides along the edge of the ruler 71.. As the plane, like the saw, has to cut in both directions, two plane-irons have been arranged obliquely so that their knives nl adopt a slanting position, Fig. 4, but naturally project 9o from the side surface of the plan-e parallel to the edge of the ruler 7L. By this device the ironsdo not cut at the same time with their entire cutting-surface, thus working easier;

besides, moldings or fillets with carved work cannot be damaged, as the saw always begins on the molding or .illet from above. The adjustment of the iron is done by the adjust.-

The ruler con- 55 ing-screw b, which separates the piane-iron n and the Fastening'iron o, situated behind, so that bot-h irons may lie iirlnly against the wood surrounding the plane.

Us@ oj'ihe m iler-bar First, the initer-rnlers 71, are adjusted to the desired angle by means of the bow r, and the plates h2 are shifted with 'their lfront edge exactly as far as the edge a: Then the molding or fillet is placed against one of the rulers 7L and eut oli' with the forward end of the saw. Then the other end of the molding or fillet is placed against the second ruler 7L and out off with the back part of the saw. Now the saw is exchanged for the plane and the two surfaces of the molding,T or fillet planed by placing the latter rst against the one and then against the other ruler. iheneutting' several moldings or fillets to the same angle, they are all first sawed and afterward planed.

lVhat we Claim, and desire to secure bj' Let ters Patent, is

l. A imiter-box comprising, in combination, a foot-board u, with a gnide-edge a; for the tool, two adj uslable 1niter-rulers 71,,sylnmetrically pivoted at g near the said guide-edge, each having a slidinfar face h2, ['or the purpose setforth.

2. A lniter-box coinjnising, in combination, a foot-board. a, with a gnide-edge :c for the tool, two adjustable unter-rulers 7L', sy1nmetrieally pivoted at g near the said guide-edge, each having a sliding face 7b2, for the purpose set forth, two syminetrieally-plaeed protraetors p, curved plates 7a, and set-clamps 7c.

In witness whereof we have signed this speeiiieation in the presence of two subscribing witnesses.

EMIL GUSTAV 'IIIEODOH Gil'lillfllih. JOHANN CARL lOllh.

Witnesses:

B. ROI, F. VON VERRIN. 

